diff --git a/src/evmctl.c b/src/evmctl.c
index 6682012..a36853b 100644
--- a/src/evmctl.c
+++ b/src/evmctl.c
@@ -1613,7 +1613,6 @@ int main(int argc, char *argv[])
 			params.x509 = 1;
 			sign_hash = sign_hash_v2;
 			params.verify_hash = verify_hash_v2;
-			params.user_sig_type = 1;
 			break;
 		case 'k':
 			params.keyfile = optarg;
diff --git a/src/libevm.c b/src/libevm.c
index 267f7c6..0c41736 100644
--- a/src/libevm.c
+++ b/src/libevm.c
@@ -460,18 +460,17 @@ int verify_hash(const unsigned char *hash, int size, unsigned char *sig, int sig
 {
 	char *key;
 
-	/* Get signature type from sig header if user did not enforce it */
-	if (!params.user_sig_type) {
-		if (sig[0] == DIGSIG_VERSION_1) {
-			params.verify_hash = verify_hash_v1;
-			/* Read pubkey from RSA key */
-			params.x509 = 0;
-		} else if (sig[0] == DIGSIG_VERSION_2) {
-			params.verify_hash = verify_hash_v2;
-			/* Read pubkey from x509 cert */
-			params.x509 = 1;
-		}
-	}
+	/* Get signature type from sig header */
+	if (sig[0] == DIGSIG_VERSION_1) {
+		params.verify_hash = verify_hash_v1;
+		/* Read pubkey from RSA key */
+		params.x509 = 0;
+	} else if (sig[0] == DIGSIG_VERSION_2) {
+		params.verify_hash = verify_hash_v2;
+		/* Read pubkey from x509 cert */
+		params.x509 = 1;
+	} else
+		return -1;
 
 	/* Determine what key to use for verification*/
 	key = params.keyfile ? : params.x509 ?
diff --git a/src/libevm.h b/src/libevm.h
index 91b4d76..2eee090 100644
--- a/src/libevm.h
+++ b/src/libevm.h
@@ -129,7 +129,6 @@ struct libevm_params {
 	int verbose;
 	const char *hash_algo;
 	int user_hash_algo;
-	int user_sig_type;
 	int x509;
 	char *keyfile;
 	verify_hash_fn_t verify_hash;